diff mbox series

[net-next] vmxnet3: support higher link speeds from vmxnet3 v9

Message ID 20240917225947.23742-1-ronak.doshi@broadcom.com (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series [net-next] vmxnet3: support higher link speeds from vmxnet3 v9 | expand

Checks

Context Check Description
netdev/series_format success Single patches do not need cover letters
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 16 this patch: 16
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 6 of 6 maintainers
netdev/build_clang success Errors and warnings before: 16 this patch: 16
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 30 this patch: 30
netdev/checkpatch warning WARNING: line length of 81 exceeds 80 columns
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-09-18--03-00 (tests: 763)

Commit Message

Ronak Doshi Sept. 17, 2024, 10:59 p.m. UTC
Until now, vmxnet3 was default reporting 10Gbps as link speed.
Vmxnet3 v9 adds support for user to configure higher link speeds.
User can configure the link speed via VMs advanced parameters options
in VCenter. This speed is reported in gbps by hypervisor.

This patch adds support for vmxnet3 to report higher link speeds and
converts it to mbps as expected by Linux stack.

Signed-off-by: Ronak Doshi <ronak.doshi@broadcom.com>
Acked-by: Guolin Yang <guolin.yang@broadcom.com>
---
 drivers/net/vmxnet3/vmxnet3_drv.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

Simon Horman Sept. 18, 2024, 7:29 a.m. UTC | #1
On Tue, Sep 17, 2024 at 03:59:46PM -0700, Ronak Doshi wrote:
> Until now, vmxnet3 was default reporting 10Gbps as link speed.
> Vmxnet3 v9 adds support for user to configure higher link speeds.
> User can configure the link speed via VMs advanced parameters options
> in VCenter. This speed is reported in gbps by hypervisor.
> 
> This patch adds support for vmxnet3 to report higher link speeds and
> converts it to mbps as expected by Linux stack.
> 
> Signed-off-by: Ronak Doshi <ronak.doshi@broadcom.com>
> Acked-by: Guolin Yang <guolin.yang@broadcom.com>
> ---
>  drivers/net/vmxnet3/vmxnet3_drv.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
> index b70654c7ad34..bb514b72c8b5 100644
> --- a/drivers/net/vmxnet3/vmxnet3_drv.c
> +++ b/drivers/net/vmxnet3/vmxnet3_drv.c
> @@ -201,6 +201,8 @@ vmxnet3_check_link(struct vmxnet3_adapter *adapter, bool affectTxQueue)
>  
>  	adapter->link_speed = ret >> 16;
>  	if (ret & 1) { /* Link is up. */

Hi Ronak,

I think it would be nice to add a comment regarding the logic added below,
particularly the inequality.  It took me more than one reading to
understand it in the presence of the patch description. I expected may have
remained a mystery without some accompanying text.

> +		if (VMXNET3_VERSION_GE_9(adapter) && adapter->link_speed < 10000)

Please consider limiting Networking code to 80 columns wide where it
can trivially be achieved, as appears to be the case here.

checkpatch can be run with an option to flag this.

> +			adapter->link_speed = adapter->link_speed * 1000;

>  		netdev_info(adapter->netdev, "NIC Link is Up %d Mbps\n",
>  			    adapter->link_speed);
>  		netif_carrier_on(adapter->netdev);

net-next is currently closed for the v6.12 merge window.
Please repost this patch after it reopens, which will be after
v6.12-rc1 is released, most likely a little under two weeks from now.
diff mbox series

Patch

diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index b70654c7ad34..bb514b72c8b5 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -201,6 +201,8 @@  vmxnet3_check_link(struct vmxnet3_adapter *adapter, bool affectTxQueue)
 
 	adapter->link_speed = ret >> 16;
 	if (ret & 1) { /* Link is up. */
+		if (VMXNET3_VERSION_GE_9(adapter) && adapter->link_speed < 10000)
+			adapter->link_speed = adapter->link_speed * 1000;
 		netdev_info(adapter->netdev, "NIC Link is Up %d Mbps\n",
 			    adapter->link_speed);
 		netif_carrier_on(adapter->netdev);